Method of making car parts.



W. D. FORSYTH.

METHOD OF MAKING CAR PARTS.

APPLICATION FILED JUNE 1. 1914,

2 SHEETS-SHEET 1.

Patented Jan. 19, 1915.

IH NORRIS PETERS CO PHOTCiITHO. WASHING mm D. Q

W. D. FORSYTH. METHOD OF MAKING CAR PARTS.

APPL IOATION FILED JUNE I 1914.

Patented; Jan. 19, 1915.

Z SHBETS-SHEET 2.

WILLIAM D.

FREE.

FORSYTI-I, OF YOUNGSTOWN, OHIO. ASSIG-NOB- TO RAILWAY PRODUCTSCORPORATION, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

METHOD OF MAKING CAR PARTS.

Specification of Letters Patent.

Application filed June 1, 1914. Serial No. 842,154.

To all whom it may concern:

Be it known that I, WILLIAM D. FORSYTH, a citizen of the United States,and a resident of the city of Youngstown, county of Mahoning, and Stateof Ohio, have mvented a new and useful Improvement in Methods of MakingCar Parts, of which. the following is a specification.

The principal object of my invention 1s to provide a method of making acar part from a single piece of metal whlch will be easy and cheap topractice and whlch Wlll produce a light and strong car part.

In the accompanying drawings, which form part of this specification, andin WhlCll like reference characters refer to like parts throughout theseveral views, Figure 1 is a side elevation of the blank from which acar part is made according to my invention; Fig. 2 is a side elevationof the blank shown in Fig. 1, after it has been trimmed and its middleportion has been displaced; F1 g. 3 1s a side elevation of the blankshown in Fig. 2 in its finished form; Fig. 4-is an end elevationof theblank shown in Fig. 1; Fig. 5 is a top plan view of the blank in itsfinished form as shown in Fig. 3; Fig. 6 is an end elevation of theblank in its finished form; Fig. 7 is a section on the line 7-7 on Fig.3; Fig. 8 is a top plan view of a modified form of blank. Fig. 9 is aside elevation of the modified form of blank shown in Fig. 8. Fig. 10 isa section on the line 1010 on Fig. 8. Fig. 11 is a cross-section ofanother modified form of blank; and Fig. 12 is a cross-section ofanother modified form of blank.

The car part which is shown in the accompanying drawings is made from astructural shape 1, which has a web 2, parallel flanges 3, and fins 4.The fins 4 project from the web 2 in a direction opposite to thedirection in which the flanges 3 project. The outer faces of the fins 4are substantially in the same plane with the inner faces of the flanges3. In order that the finished side frame may have the properproportions, the edge portions of each flange 3 are sheared off at theends and middle, and each flange 3 has its full width near each end andis comparatively narrow at its ends and middle, as indicated by thedot-and-dash line 5 on Fig. 1. Portions of the fins 4 are also removedfrom the web 2 for a short distance at each end of said web and thecorner portions of the remaining portions of said fins 4 are sheared 01falong lines 6 extending obliquely from the web 2 to the outer edges ofsaid fins 4. In the web 2 are cut parallel slits 9 which extendlongitudinally thereof and terminate at points 10 and 11 short of itsends. The slits 9 are so located in the web 2 as to lie between theinner faces of the flanges 3 and the outer faces of the fins 4.

After the structural shape 1 has been trimmed I and slitted, its middleportion (comprising that part of said structural shape between the ends13 and 14 of the fins 4, and including the slits 9), is displaced fromits original plane so that the major part of said middle portion lies ina plane spaced from and parallel with the original plane, as shown inFig. 2.

After the middle portion of the structural shape 1 has been displaced asdescribed, the middle portion of the web 2, that is, the portion whichis bordered by the slits 9, together with the fins 4, is displaced fromits plane in a direction perpendicular to said plane; and the middleportions of the flanges 3 between the ends of said slits 9 are displacedfrom their plane in the opposite direction. The middle portion of theweb 2 and the middle portions of the flanges 3 are displaced the sameamount to form an elongated hexagonal opening 15.

The structural shape 1 after the above described operations has a. shapewhich is adapted for use as part of a car truck side frame. The flanges3 constitute the com pression member of the side frame, and the middleportion of the web 2, together with the fins 4, constitutes the tensionmember. A suitable frame or bars, not shown, is fastened to the flanges3 and the fins 4 to provide the bolster guide bars. The end portions 16of the structural shape 1 constitute the parts to which the journalboxes are attached, and these end portions have spaced holes 17 thereinthrough which the bolts for attaching the journal boxes pass.

In the modified form of blank shown in Figs. 8 to 10 a metal plate isbent to form a channel which consists of a web 18, flanges 19, andflanges 20 on the flanges 19. In the web 18 of the channel arelongitudinal slits 21 which terminate short of the ends of said web. Theslits 21 have their ends closer Patented J an. 19, 1915.

together than their intermediate parts. The web 18 consists of two endportions 22 and a middle portion 23 bordered by the slits 21. The edgeportions of the middle portion 23 are bent down to form flanges 24:.After the blank has been formed as described, it is treated in the sameway as hereinbefore described.

Another modified form of structural shape, shown in Fig. 11, is anI-beam which has a web 27 and unequal flanges 25 and 26. In the web 27are two spaced slits which extend longitudinally thereof and terminateshort of its ends, as indicated by the dotted lines 28. After the web 27has been slitted, the I-beam is treated in the way hereinbeforedescribed.

Another modified form of structural shape, which is shown in Fig. 12, isa channel having flanges 29 and a web 30. In the web 30 are two spacedslits which extend longitudinally thereof and terminate short of itsends, as indicated by the dotted lines 31. After the channel is slittedit is treated as hereinbefore described.

The opening 15 is formed by displacing the flanges 3 and the middleportion of the web 2 the same amount and without stretching any of themetal. By displacing the middle portion of the structural shape 1 out ofthe plane of its end portions, that is, out of its own original plane,it is possible to bring the end portions 16 thereof nearly in line withthe middle portions of the flanges 3 thereof, and likewise displace theflanges 3 and the middle portion of the web 2 the same amount. Themiddle portion of the structural shape 1, that is, the portion which isdisplaced from its original plane, is longer than the slits 9, inconsequence of which the opening 15 is shorter than the distance betweenthe inner ends of the end portions 16. For the same reason the plane ofthe end portions 16 is above the longitudinal median line of the opening15, and the greatest amount of metal is at the points i 1 where thecompression and tension members join.

The car part shown as made according to my invention is adapted for acar truck side frame, but other car parts may be made according to myinventlon.

What I claim is:

1. The method of making car parts which consists in making two spacedslits in a metal blank extending longitudinally thereof and terminatingshort of its ends, displacing the middle portion of said blank out ofthe plane of the end portions of said blank, said middle portion beinglonger than said slits, displacing the portion of said blank includedbetween said slits from its plane in a direction perpendicular to itsplane, and displacing the side portions of said blank outside of saidslits from their plane in the opposite direction to form an open frame.R

2. The method of making car parts which consists in forming a blankcomprising a web having flanges and fins thereon, said fins projectingfrom said web in a direction opposite to the direction in which saidflanges project, cutting in said web two spaced slits extendinglongitudinally thereof and terminating short of its ends, said slitslying between said flanges and including between them said fins,displacing the middle portion of said blank so that its middle region isin a plane parallel with and spaced from its original plane, displacingthe portion of said blank included between said slits from its plane ina direction perpendicular to its plane, and displacing the portions ofsuch blank outside of said slits in the opposite direction.

3. The method of making car parts which consists in slittinglongitudinally the intermediate portion of a metal blank to divide saidintermediate portion into a plurality of strips integral at their ends,displacing the middle portion of said blank from its plane to lie in aplane parallel to and spaced from its original plane, displacing one ofsaid strips of said intermediate portion from its plans in a directionperpendicular to its plane, and displacing the other strips in theopposite direction, to form an open frame.

Signed at St. Louis, Missouri, this 28th day of Way, 1914.

WILLIAM B. FORSYTH.

Witnesses:

NEIL D. Pnns'ron, MARTHA A. SHELTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

